I think that they should have things called schematics and recipes that you can buy and carry around, so once you get to the certain skill level required to learn how to make a new weapon or cook a new food, you don\'t have to go to the trainer, but just learn it from the little item that you had carried with you.
I\'m not sure how this would work with the PlaneShift tradeskill system, but it worked really nicely in World of Warcraft.